Requesting elaboration on rendered formats

jkb242 wrote on 12/2/2005, 12:57 PM
I have read the Vegas 6 manual concerning this subject and there is simply not a very good explanation of the differences in the rendering formats listed below:

HD 720-30P
HDV 720-30P

What does the V represent ? The only difference offered is the audio bandwidth but the audio sampling rate is given as the same. Obviously they are both Progressive Scan and both produce a wide screen format.

Since both rendering models provide progressive video, what would be the difference in viewing rendered files that are 24, 25 or 30 fps, regardless of the television standard or line frequency. What effect does the AC line frequency (hense the reference television standard) play in viewing progressive video, either on a PC monitor or from a DVD player designed to play progressive encoded video. The goal is to provide video that can either be taken to DVD Authoring to produce a high quality playable DVD's (either PAL or NTSC) or to take the same video data file, before rending, and place it on a DVD (just becasue it won't fit on a CD) to be viewed on a PC monitor or LCD screen.

What is the purpose in the HD 720-P30 rendering format supplied with Vegas if a smooth film look is obtainable with a 25P or 24P format?

A few comment from the gracious and very knowledgable folks here on this forum would be much appreciative as I have search exhaustively for a clear explanation of these questions. All of my original video source material is high-end analog or digital (not HD) video from high-end comsumer cameras captured in Vegas to the time line with the built in capture program.

Much thanks to all for the time to read and respond!!






Comments

Spot|DSE wrote on 12/2/2005, 1:07 PM
HDV is a compression format, using MPEG 2. If you don't have an HDV camcorder, then this output format is useless to you.
HD output will be an uncompressed output format or a compressed format, depending on which templates you're looking at. Unless you have HDCAM and an HD-SDI card, or have access to a system with these tools, it too, will be useless to you.

If you are rendering to SD-DVD, both of these formats are useless to you, you should be rendering to a DVD template like NTSC or PAL DVD. I do realize both of these HD formats show up in the MPEG template, but this is for future-looking projects or specialized use.
Framerates in the US are 24p, 30p, and 60i. PAL allows for 24p (some systems) 25p, and 50i. This is what determines the framerate you'll use, in conjunction with the acquisition format.
24p from 60i will give you a smooth look with a film-like cadence. 25p will also give you a film like cadence.

The answer in the viewing differences must be found with your own eye. Experiment and decide what you prefer, not what someone in a forum tells you. Some folks love the look of 24p, others hate it. Some don't care. It's a personal and artistic choice. Take a few minutes and render out a file, and decide what you prefer.
Regarding the HD/HDV formats, this is entirely related to what equipment you do or don't have access to.
jkb242 wrote on 12/2/2005, 1:22 PM
Much thanks for the very good informaiton. I see your point and I have done quite a bit of experimenting. There are not day and night differences, your are correct but I was attempting to establish the best starting point. Naturally, interlacing looks awful on a PC monitor since there is no de-interlacer involved.

One comment you made about compression is most interesting and I want to review further. To what particular customizable setting are you referring for HD that is not compressed? That is something I would like to review further if you can point me to that setting.